TOPIC: Looking at a '79 Euro 928S, Auto. Thoughts on early Euro Models?

Looking at an early Euro Spec '79 Oak Green Auto with about 197km (125k miles). No A/C, would the small increase in horsepower be noticeable between it and a US spec car? Car looks like its in 6/10 overall shape, engine pictures show vacuum leaks (broken hoses) and a busted oil vent hose.
Isn't immaculate, but I do believe worthwhile for the price and the overall condition considering the early days.
I know folks find interest in early cars, particularly early 5-speeds, is there a good following for Euro spec models?